Scale indicatob



Dec. l1, 1928.

o. A. JOHNSON SCALE INDICATOR d llarch 24, 1928 .r .7.

Patented Dec. 1l, 1928.

UNITED STATES OLAF A: JOHNSON, F MINNEAPOLIS, MINNESOTA.

SCALE INDICATOR.

v. i Application filed March 24, 1928. Serial No. 264,483.

Thisinvcntion relates to new and useful imlnmements in indicatingdevices, and particularly io indicating devices for use in connectionwith weighing scales, and like yr11-.i-

5 chines.

lOne object of the invention is to provide an indicator, driven from themechanism of the scales, and wherein, the said connections arecompletely obscured from the view of the customer, as well as thesalesman.

Another object is to provide a novel and simple construction wherein theindicating hand is moved around the dial by means of a permanent magnet,which obviates the' 16 usual links, levers, and gears.

Other objects and advantages will be apparent from the followingdescription when taken in connection with the accompanying drawing.

20 In the drawing:

Figure 1 is a front elevation of an indicatn ing devicemade inaccordance with the present invention.

Figure 2 is a similar View, but with the front wall of the casingremoved.

Figure 3 is a vertical sectional view on the line 3-3 ofFigure 2,showing the connections between the driving wheel and the hand operatingring.

Figure 4 is a. horizontal sectional view on the line 4 4 of Figure 2.

Referring particularly to the accompanying drawing, there is shown aframe 10, which is hollow as shown, and has the opening 11 therethrough,said opening being of circular outline, and secured within said opening,and held in spaced parallel relation, by means of the flat ring 12, arethe glass disks or panes 13. In the center of the inner face of each ofsaid glass disks there is formed a small recess 14, in which is receivedan end of the shaft 15, on which is mounted the indicating hand 16.`Disposed wthin'the hollow frame,

in surrounding relation to `the ring 12, is ay ring 17 said ring havingthe peripheral grooves 18 and 19 in its outer edge. The ring 12 ispreferabl in the form of an angle member with one o its wings secured tothe frame 10, by means of the screws 20. The frame 10 is also providedwith the removable ring 21, held thereon by the Screws 22, which permitsaccess to theinterior of the frame `for adjustments and repairs to thevarious parts of the device. Mounted on a shaft 23, below the ring 17,is a disk or wheel 24, the up-per portion of the periphery of whichcontarts' with the lower portion of the peripliery of the ring 17. Theshaft 23 driven by the l'uechanism of the scales, not shown,v in any.suitable manner.

Secured to the upper portion of the periphery ofthe wheel 24, ywithinone of the grooves 25, in the periphery thereof, is an end of a metalstrip 26, said strip being passed around the ring 17, in the groove 18,toward the left, as viewed in'Figure l, the other end of said strip`being secured to the ring, at a `point adjacent that at which therst-named end is secured to the wheel. A second metal strip or band 27has one end secured within the g1'oove`19, in the periphery of the ring17. adjacent the periphery of the wheel 24, and is passed around thewheel, within the other groove thereof, and has its other end secured tothe wheel, at a point adjacent the first-k named end. This strip or band27, is, ask

will be seen in Figure 4, passed around the wheel 24, in the oppositedirection to that in which the first strip or band is passed around thering 17, whereby the ring will be driven in either direction, accordingto the direction of rotation of the wheel 24.

Formed on the face of one of the glass disks 13, in any suitable manner,and in a circular series, are numerals 28, seen in Figure 1, over whichthe indicating hand 16 is adapted to traverse. Grooved wheels 29 aremounted in the frame 10, for engagement with the ring 17, whereby tomaintain t-he same in proper position with relation to the wheel 24.Secured in the inner face of the ring 17 is a permanent magnet 31, whichattracts the indicating hand 16, to cause the same to traverse the dial,as the mechanism of the scales rotate the Wheel 24. It will beunderstood that one of the strips or bands serves to rotate the ring 17to cause the hand 16 to indicate the weight of the article placed on thescales, while the other strip or band serves to restore the indicator tonormal position.

The indicator,` as viewed from the customers side of the counter,presents a clear transparent glass through which the customer may seethe salesman, while the salesman may readily see the customer. Theindicating hand 16 is clearly visible, but none of the mechanismconnectedwith the scales, or such parts as serve to produce the rotationof the ring 17, ycan be seen. The customersimply sees the hand rotate,without seeing anythmg which causes such rotation.

WhileI have shown and described the indirfa-.tor as especiallyv adaptedfor use in connection with Weighing scales, it will be understood thatsuch indicator may be used in connection with any machine or deviceWhere snc-h an indicator is adapted.

That is claimed is:

l. An indicating device for a weighing scale comprising a casing, awheel in the casing having ineans for operative connection with a scalemechanism, a ring supported on the upper port-ion of the Wheel, drivingconnections between the Wheel and ring. transi parentplates secured inopposite sides of the casing and having a series of gradnations thereon,an indicating hand between the plates and having its Sha'tt jonrnaled insaid plates, a second ring Within the first ring and supporting thelatter` and guiding inezins in the casing engaged with the peripher;7 ofthe first ring.

2. A scale indicator comprising a casing having a sight opening throughthe upper portions of its front and rear walls, trans`A parent platessecured Within Said openings and having central recesses: in their innerfaces, the said plates having circular series of graduations, anindicating hand between the plates and having a shaft the ends of which,are supported in said recesses, a sta tion ary ring Within the easing in@surrounding relation to the sight openings, a second ring rotatable onthe first ring and having peripheral grooves, a` peripherallv groovedwheel arranged below the second ring and sup porting the saine thereon,reversely wound flexible bands connected with the second ring and wheeland playing in the grooves thereof, and a magnet on the Second ring formoving the indicating hand as said ring is driven by the said Wheel.

In testimony whereof, I affix myv signature,

@LAF A. JOHNSON.

